And I have built a very similar, perhaps even slightly larger, system, only in MySQL with TokuDB :) These free old-fashioned RDBMSs really can go fairly big an

And I have built a very similar, perhaps even slightly larger, system, only in MySQL with TokuDB :) These free old-fashioned RDBMSs really can go fairly big and stay really fast; much bigger and faster than the noSQL stuff I also use. One thing that pushes people towards noSQL is that it is easier to get started; but I think that I've saved buckets of time in the long run by going with a conventional relational database. ymmv but its always worth thinking 'is this problem too big for a classic free RDBMS?' and the answer is almost always 'hell, no!'